19957210

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{241}}^1$

素因数の和:288

約数の個数: 72

約数和(自身を含む): 45437436

約数和(自身を除く): 25480226

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 49, 65, 70, 91, 98, 130, 169, 182, 241, 245, 338, 455, 482, 490, 637, 845, 910, 1183, 1205, 1274, 1687, 1690, 2366, 2410, 3133, 3185, 3374, 5915, 6266, 6370, 8281, 8435, 11809, 11830, 15665, 16562, 16870, 21931, 23618, 31330, 40729, 41405, 43862, 59045, 81458, 82810, 109655, 118090, 153517, 203645, 219310, 285103, 307034, 407290, 570206, 767585, 1425515, 1535170, 1995721, 2851030, 3991442, 9978605, 19957210]

約数ペア:

[(1, 19957210), (2, 9978605), (5, 3991442), (7, 2851030), (10, 1995721), (13, 1535170), (14, 1425515), (26, 767585), (35, 570206), (49, 407290), (65, 307034), (70, 285103), (91, 219310), (98, 203645), (130, 153517), (169, 118090), (182, 109655), (241, 82810), (245, 81458), (338, 59045), (455, 43862), (482, 41405), (490, 40729), (637, 31330), (845, 23618), (910, 21931), (1183, 16870), (1205, 16562), (1274, 15665), (1687, 11830), (1690, 11809), (2366, 8435), (2410, 8281), (3133, 6370), (3185, 6266), (3374, 5915)]